Similar words: bargain away, drainage, drainage basin, brain drain, in a way, okinawa, once in a way, drain.
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31 Flat roofs may either be dead level or (preferably) have some degree of pitch to them so that rainwater and melted snow can drain away.
More similar words: bargain away, drainage, drainage basin, brain drain, in a way, okinawa, once in a way, drain, drained, draining, acid rain, down the drain, go down the drain, nawab, runaway, run away, unaware, unawares, sign away, turn away, run away with, be unaware of, unawareness, frighten away, against the grain, against a rainy day, in a word, in a wink, in awe of, maintainable.